| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 971.42 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.97 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1062.44 | USD | 20250828 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1061.77 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 970.35 | USD | 20250827 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1060.57 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 969.26 | USD | 20250826 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 969.63 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1060.97 | USD | 20250825 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1058.59 | USD | 20250823 |